Window construction



June 4, 1929. EHRSAM WINDOW CONSTRUCTION Filed Feb. 24, 1928 [NV/ENTOR FEEDER/CK 54E smv A TTORNE Y6 Patented June 4, 1929.

UNITED STATES FREDERICK EHRSAiM, OF READING, PENNSYLVANIA. I

WINDOW CONSTRUCTION.

' Application filed February 24, 1928. Serial No. 256,500.

This invention relates to improvements in windows, and has partlcular reference to a combined parting bead and weather strip con-.

struetion.

In the application of weather stripping to windows it has generally been the practice to interpose the stripping between a sash and parting bead in such manner that the space etween said parts is filled up by the stripping to prevent the ingress of air and to eliminate rattles. With such constructions of weather stripping difficulties are sooner or later encountered owing to the fact that sufficient space is not provided between the parting bead and sash to allow for excessive warping or expansion of the parts which very often occurs with the inferior materials now used in building window frames and sashes. The warping or expansion of the sashes or other parts sometimes occurs to such a degree that the weather stripping, owing to said lack of space, becomes ineffective and the sashes will jam and stick in their frames against the stripping making it extremely difficult to open and close the sashes.

In accordance with the present invention it is proposed to overcome such difliculties as above mentioned, by utilizing a metallic weather strip of resilient material which is so constructed and arranged between a part ing bead and sash that such strip will, under all conditions yieldingly resist pressure of the sash thereagainst and will, at the same time, allow for a greater degree of warping or expansion of the sash than heretofore has been possible without affecting the efiiciency of the weather strip or the operation of said sash.

With this in view the invention consists in providing a resilient weather strip having a portion fixed relative to the usual groove in the pulley stile of a window, and a sash-em gaging portion which, under normal conditions, will extend diagonally relative to the planes of the side walls of said groove and outwardly beyond one of them to contact the window sash, but which will be capable of movement to a position between the planes of said walls to permit a portion of the sash to overlap said groove in the event of excessive warping or expansion of the sash.

The inventive idea involved is capable of receiving a variety of mechanical expressions, some of which are shown in the accompanying drawing, in which Figure 1 is a fragmentary horizontal section through a window frame and two sashes, showing one form of the invention applied thereto' Figure 2 is an enlarged fragmentary perspective view of the form of the invention shown in Figure 1;

Figure 3 is a view similar to Figure 1, illustrating another form of the invention;

Figure 4 is an enlarged fragmentary front glevatdion of the invention shown in Figure Figures 5 to 8 are each transverse sectional views of other different embodiment of the invention.

Referring more particularly to the accompanying drawing, 10 indicates a window frame, 11 and 12 the outer and inner stops, respectively, 13 and 14 the upper and lower sashes of the Window and 15 the usual pulley stile which is customarily constructed with the parting bead groove 16 therein.

The embodiment of the invention shown in Figures 1 and 2 will now be described. In this form a parting bead 17 is utilized which extends the entire height of the window frame and which is seated in the groove 16 in the usual manner. Contrary to the ordinary form of parting strip, however, the bead 17 is reduced on opposite sides thereof to provide a central extension 18 which projects from the countersunk portion of the bead and the inner end of which terminates substantially flush with the outer surface of the stile 15. This head is secured to the stile 15 by a plurality of suitable fasteners 20'. The weather stripping employed in the various forms of the invention is made of a resilient metal, preferably bronze, and. the weather strip 19, shown in Figures 1 and 2, is made from a single piece of material which extends the entire length of the bead 17. The strip 19 is bent intermediate its end into substantially U-shaped form with the intermediate portion or bight of the strip of a width substantially equal to that of the extension 18. This intermediate portion is secured to the outer edge of the extension 18 by suitable fasteners 20 arranged at intervals. The sides of the strip extend inwardly toward the stile 15 and each is disposed between an' adjacent side of the extension 18 and one of the sashes of the window so as to constitute a sash-engaging portion 21 which, like the intermeiate portion 19, extends the entire length of the strip. Normally, that. is when the sashes l3 and 14 are in the position shown in Figure 1, the associated portion 21 extends diagonally relative to the sashes and to the sidewalls of the groove 16 so that only the outer free edge of the portion 21 engages its sash. Due to the resiliency of the material of the strip the portion 21 yieldingly resists any tendency of the sash to move inwardly toward the parting bead and also maintains said outer edge of the portion 21 in constant engagement with its sash so as to effectively minimize the possibility of ingress of air past the sashes and into the interior of a room, and also prevent any excessive rattling of the sashes. In its normal position the inner edge of each portion 21, where it joins the intermediate portion 19, is disposed in a position between the adjacent side surface of the extension 18 and the plane of the adjacent side wall of the groove 16. Due to the normal diagonal disposition of the portion 21 the outer edge and contiguous part thereof extends outwardly beyond said plane of the side wall of the groove. Should the sash warp or expand excessively there is sufiicient space between the portion 21 and the adjacent surface of the extension 18 for said portion to be forced inwardly toward the extension, rocking about the inner edge of the portion as a fulcrum, until said portion will lie in a plane entirely within the space between the plane of the adjacent side wall of groove 16 and the side of the extension 18. space is of a greater width than the thickness of the portion 21 and thus it will be possible for the window sash to expand or warp to such an extent that a portion thereof will overlap the adjacent side wall of the groove 16, thereby allowing for a greater amount of expansion of the sash than is possible in other known constructions. As shown, the free edges of the portions 21 are inturned, as indicated at 22, to provide a small head so that no sharp edges will be presented to the window sash and should excessive expansion or warping of the sash occur beads 22 may be recessed within grooves 23 formed on opposite sides of the extension 18 adjacent the inner edge thereof.

In the form of the invention shown in Figures 3 and 4, a parting bead 24 is mounted in the groove 16 and provided with a portion 25 which extends outwardly from the outer edges of said groove. For the upper sash 13 the adjacent side of the portion 25 is reduced, as indicated at 26, to a point slightly below the meeting rail of said sash, as indicated in dotted lines in Figure 4, when the sash is in its fully raised position so that should the sash be lowered to the extent of its downward movement there would still be a portion thereof overlapping the reduced portion 26. The opposite side of the extension 25 is likewise reduced in the lower portion thereof, as indicated at 27 (Figure 4) and in dotted lines in Figure 3. A metallic weather strip 28 is This associated with each side of the parting head with one portion 29 thereof secured by fasteners 30 to a vertical side of the head 24 so as to be engaged in the groove 16 and contact one of its side walls. The material of the strip is bent at the outer edge of the portion 29 to provide the inwardly extending offset 31 which projects into the recess 26. From the offset the strip is extended outwardly to the outer end of the extension 25, at which point said strip is bent to form the sash-engaging portion 32 which is disposed diagonally relative to the associated sash and arranged for movement between said sash and the extension 25 in precisel the same manner described in connection with the portions 21. The weather strip on the opposite side of the parting bead 24 is a duplication of the strip 28 and operates in the same manner in connection with the lower sash 14.

, In Figure 5 the parting head 33 is adapted for disposition in the groove 16 and is provided with a central extension 34 projecting outwardly from the outer edge of the bead proper. A weather strip 35 is provided for each side of the bead, only one of said strips being in the figure. This weather strip has its inner portion recessed Within the groove 16 and secured to the head 33 and at the outer edge of said inner portion the strip is provided with an inwardly extending oflfset 36 which engages the shoulder formed by the extension 35 and the body of the bead. From the offset 36 there extends outwardly in a diagonal direction the sash-engaging portion 37, the outer edge of which contacts the adjacent sash in the same manner as described in connection with the portions 21 and 32 of the other embodiments.

The bead 38 of Figure 6 is disposed totally within the groove 16 of the stile, thereby dispensing with the extension 34 .of Figure 5.

The weather strip 39 is of exactly the same,

construction as the strip shown in Figure 5. In Figure 7 the parting bead 40'is recessed entirely within the groove 16 and the weather strip 41 is of the same construction as illustrated in the two previous embodiments except that its inner portion is extended to provide a flange 42 which is secured to the innermost surface of the head 40. This head is bevelledv along one of its side surfaces, as indicated at 43, so as to allow for an additional inner movement of the sash-engaging portion of the strip 41 when an excessive pressure is exerted thereagainst by the sash engaged therewith.

In the form of the invention shown in Figure 8, the use of a parting head is dispensed with. In this case the weather strip is provided with a base portion 44 of a greater width than the groove 16 and is secured to the stile 15 by suitable fasteners 45 driven into the stile on opposite sides of said groove. Adjacent one of the edges of the base 44 the material of the strip is bent upon itself to provide a lon itudmally extending rib 46 which projects into the groove 16 and engages one of the side walls thereof. Ad'acent the rib 46 the material of the strip is cut upon itself to provide the inwardly extending oilset 47 in contact with the base 44 and from the inner edge of said olfset there extends outwardly and diagonally the sash-engaging portion 48 of substantiall the same formation and having the same unction as the previously described similar portions. As specifically described in connection with Figure 1, it is to be noted that in all of the other embodiments the disposition of the sash-engaging portions is such that the same may be moved inwardly by pressure of the engaging sash until a portion of the sash will overlap an adjacent side-wall of the groove 16, thereby afi'ording considerably more freedom of movement of the sash in case of expansion or warping thereof.

What is claimed is:-

1. In a window, a stile having a groove therein, and a resilient strip having a portion fixed relative to said groove, and a sash-engaging portions extending in a diagonally lateral direction from a point intermediate and spaced laterally from the planes of the side walls of said groove with the sash-engaging edge of said portion projecting laterally beyond the plane of one of said side Walls and movable, by lateral pressure of a sash thereagainst, about said oint as a fulcrum to a position between sai planes.

2. In a window, a stile having a groove therein, and a resillent strip having a portion fixed in said groove along one of its side walls, an intermediate portion projecting inwardly from the first named portion to a point intermediate the planes of the side walls of said groove, and a sash-engaging portion extending in a diagonally lateral direction with its inner edge disposed intermediate said plane and its outer sash-engaging edge arranged outwardly beyond one of said planes, said sash-engaging portion being movable by lateral pressure thereagainst to a position substantially parallel to the latter plane.

3. In a window, a stile having a groove therein, a parting bead in said groove, and a resilient strip fixed to said bead and having a sash-engaging portion extending in a diagonally lateral direction from a point intermediate the planes of and spaced .from the side walls of said groove with the sash-enagin edge of said portion projecting outt vardl; beyond the plane of one of said side walls, said sash-engaging portion being movable, by lateral pressure, to a position wherein the plane thereof will be disposed between and spaced from the planes of said side walls.

4. In a window, a stile having a groove therein, a parting bead in said groove, and a resilient strip fixed to said bead and having a sash-engagin portion extendiu diagonally relative to t 1e planes of the si e walls ofsaid groove with the free edge of said portion capableof contact with a sash and the I inner edge of said portion arranged in a lane between and spaced from the planes 0 said side walls.

5. In a window, a stile havinga groove therein, a parting bead in said groove, and a resilient strip fixed to said bead and having a sash-engaging portion extending diagonally relative to the planes of the side walls of said groove with the free edge of said portion capable of contact with a sash and movable, by lateral pressure of the sash thereagainst and toward said groove, to a osition in which an edge of said sash will be isposed between the planes of said walls.

6. In a window, a stile having a groove therein, a parting bead in said groove, and a resilient strip fixed to said bead and having a sash-engaging portion disposed diagonally relative to the fixed part of the strip with the free outer edge of said sash-engaging portion in closer proximity to said groove than the inner edge thereof, and the latter edge being arranged in a plane which is between and spaced from the planes of the side walls of said groove to permit said sash-engaging portion to be moved inwardly, by pressure of the sash thereagainst, to a plane between said planes of the side walls.

7. In a window, a stile having a groove, a resilient strip having a portion fixed to said groove, an intermediate portion extending inwardly from the first named portion and.

overlapping said groove, and a sash-enga ing portion extending diagonally outward rom the inner edge of said intermediate portion and having a free outer edge which projects laterally beyond the plane of an adjacent side wall of said groove.

8. In a window, a stile having a groove therein, a parting bead in said groove having an outwardly bevelled side edge, a resilient strip having a portionfixed in said groove and movable between said bevelled edge and the adjacent side wall of the groove, an intermediate portion extending inwardly from the first named portion in overlapping relation to said groove, and a sash-engaging portion ex tending diagonally outward from the inner edge of said intermediate portion and having a free outer edge which projects laterally beyond the plane of an adjacent side wall of said groove.

9. A resilient weather strip for windows bent to provide a portion attachable to a stile in fixed position relative to a groove in said stile, and a sash-engaging portion ex tending laterally from the bend in said strip and having an outer free edge for contact with a sash, the bend in said strip forming the inner edge of said sash-engaging portion and being disposed in a plane intermediate and spaced from the planes of the side walls of said groove.

10. A resilient weather'stri for windows bent'to provide a portion attac able to a stile in fixed osition relative to a roove in said stile wit the bend in said strip disposed in a plane between and s aced from the planes of the side walls of sai groove, and a sash-engaging portion exten ing diagonally from said bend and having its free edge projectin laterally beyondthe plane of one-of said 51 e walls to enga e a window sash, said sashengagmiportion eing movable to a position ent1re1 of sai side walls to permit; an edge of the sash to overlap the ed e of said groove formed by one of said side wa 1s.

In testimony whereof I have aflixed my signature.

FREDERICK EHRSAM.

etween and spaced from the planes 15 

